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Tunneling ISO/CLNP packets through OSPF network

Our company developed an internal enterprise network based on OSPF routing protocol implemented on 5 OSPF areas Now we want to conect equipment that it's working with IS-IS and ISO/CLNP packets.

Where can I find some examples of tunnelig ISO/CLNP packets through our infrastructure and how does affect the routers configured only with OSPF?


Re: Tunneling ISO/CLNP packets through OSPF network

Depending on your ISIS/CLNS requirements and coverage you have two choices, as I see it.

1. Enable a separate ISIS routing process on all routers needing to be a transit for CLNS traffic (overlay on your current architecture that would run as an independant routing process).

2. Tunnel in GRE or IP/IP tunnel from where you have your CLNS hosts. This method does not scale well at all if you have many areas that need to talk to one another. This would require CLNS routing only to be enabled on the edged needed and the CLNS traffic would be then encapsulated into your GRE (or other) tunnel and transitted across your IP network.

For examples (there are many for each depending on what you choose) please look for GRE Tunnel configuration and ISO CLNS Configuration. This should provide you with enough information to get you going.

Hope this helps,